What is CVE-2026-32627?

CVE-2026-32627 is a high-severity vulnerability in Yhirose Cpp-httplib, classified under Improper Certificate Validation. CVSS score: 8.7/10. Published 2026-03-13.

How severe is CVE-2026-32627?

High severity. CVSS v3 base score is 8.7 out of 10.

Vulnerability in Yhirose Cpp-httplib

CVE-2026-32627

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and set_follow_location(true), any HTTPS redirect it follows will have TLS certificate…

Vulnerability class: Improper Certificate Validation

EPSS: 0.000 (10.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N.

Affected products

Yhirose Cpp-httplib — versions < 0.37.2

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-c3h8-fqq4-xm4g (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-32627?: CVE-2026-32627 is a high-severity vulnerability in Yhirose Cpp-httplib, classified under Improper Certificate Validation. CVSS score: 8.7/10. Published 2026-03-13.
How severe is CVE-2026-32627?: High severity. CVSS v3 base score is 8.7 out of 10.